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NBME 20 Answers

nbme20/Block 4/Question#39 (reveal difficulty score)
A 30-year-old woman develops serum sickness ...
C3a ๐Ÿ” / ๐Ÿ“บ / ๐ŸŒณ / ๐Ÿ“–
tags: Immuno pathoma

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 +10  upvote downvote
submitted by โˆ—johnthurtjr(168)

FA 2019 pg 400:

Mast cells... can be activated by tissue trauma, C3a and C5a, surface IgE cross-linking by antigen (IgE receptor aggregation) --> degranulation --> release of histamine, heparin, tryptase, and eosinophil chemotactic factors.

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ibestalkinyo  AKA Anaphylotoxins +3
dermgirl  FA 2020 pg 408 +1

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